B3311331313231311331322331333132313331322121133133313231333132323311211   >>    B331133131323131133132233133313231333132212113313331323133313232331121   <<    B3311331313231311331322331333132313331322121133133313231333132323311213   >>      B3311331313231311331322331333132313331322121133133313231333132323311212   >>